Fe 3 O 4 -doped mesoporous carbon cathode with a plumber's nightmare structure for high-performance Li-S batteries
Shuttling of lithium polysulfides and slow redox kinetics seriously limit the rate and cycling performance of lithium-sulfur batteries. In this study, Fe O -dopped carbon cubosomes with a plumber's nightmare structure (SP-Fe O -C) are prepared as sulfur hosts to construct cathodes with high rat...
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Veröffentlicht in: | Nature communications 2024-06, Vol.15 (1), p.5451 |
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Hauptverfasser: | , , , , , , , , , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Shuttling of lithium polysulfides and slow redox kinetics seriously limit the rate and cycling performance of lithium-sulfur batteries. In this study, Fe
O
-dopped carbon cubosomes with a plumber's nightmare structure (SP-Fe
O
-C) are prepared as sulfur hosts to construct cathodes with high rate capability and long cycling life for Li-S batteries. Their three-dimensional continuous mesochannels and carbon frameworks, along with the uniformly distributed Fe
O
particles, enable smooth mass/electron transport, strong polysulfides capture capability, and fast catalytic conversion of the sulfur species. Impressively, the SP-Fe
O
-C cathode exhibits top-level comprehensive performance, with high specific capacity (1303.4 mAh g
at 0.2 C), high rate capability (691.8 mAh gFe
O
at 5 C), and long cycling life (over 1200 cycles). This study demonstrates a unique structure for high-performance Li-S batteries and opens a distinctive avenue for developing multifunctional electrode materials for next-generation energy storage devices. |
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ISSN: | 2041-1723 |